update_html also takes individual arguments

bin/update_html

@@ -7,10 +7,9 @@
 # https://stackoverflow.com/a/246128/98600
 DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
 
-find . -name '*.t2t' | while read t2t ; do
-  html="${t2t%.t2t}.html"
-  if [ "$t2t" -nt "$html" ] ; then
-    echo "$t2t"
+function render_html {
+  t2t=$1
+  html=$2
   relroot="$( dirname $t2t | sed -E 's/^.\///' | sed -E 's/[^/]+/../g' )"
   pandoc \
     --from=t2t \
@@ -24,8 +23,24 @@ find . -name '*.t2t' | while read t2t ; do
   if [ -f "$html" ] ; then
     sed -i.bak "s/<table>/<table class=\"table\">/" "$html" && rm "$html.bak"
     sed -i.bak -E "s/\`\`(.+)\`\`/<code>\1<\/code>/g" "$html" && rm "$html.bak"
+    echo "$html"
   else
     echo "Error creating $html"
   fi
+}
+
+if [ $# -gt 0 ] ; then
+  # Render spcific file(s) from args, ignoring dates
+  for t2t in "$@" ; do
+    html="${t2t%.t2t}.html"
+    render_html "$t2t" "$html"
+  done
+else
+  # Render all files found from cwd, if source is newer
+  find . -name '*.t2t' | while read t2t ; do
+    html="${t2t%.t2t}.html"
+    if [ "$t2t" -nt "$html" ] ; then
+      render_html "$t2t" "$html"
     fi
   done
+fi